The Way We Define a Kilogram Could Change Next Week

The future of mass depends on a conference vote next week. Read More >>

Your GPS Probably Overestimates Distance

Ever thought your GPS system said you’d gone further than you expected? A new study dives into the statistics behind the satellite-based positioning service—and finds that overestimates in distance are inevitable based on the way measurements are currently made. Read More >>

How Early Astronomers Managed to Measure Cosmic Distances

The solar system, let alone the Universe, is too big to measure by any conventional means. So how did early astronomers manage to do it without all the fancy kit scientists now have at their disposal? Read More >>

A Magnetic Field Detector 1,000 Times More Powerful Than Predecessors

Measuring magnetic fields with accuracy is important, whether it’s for geological exploration or medical imaging. Now, a team from MIT has developed a new laser-based magnetic field detector that’s 1,000 times more efficient than previous examples. Read More >>

Google Maps Update Lets You Measure Distances (or Aimlessly Doodle)

Ever try measuring the straight-line distance between two points on Google Maps? You had to hold some object or appendage up to the little scale, then eyeball-measure the distance on your screen. What a mess. No more—a new update puts the task a right-click away. Also, you can doodle with it. Read More >>